diff --git a/webv86/web/README b/webv86/web/README
index e1b6bb7..20649d1 100644
--- a/webv86/web/README
+++ b/webv86/web/README
@@ -2,6 +2,8 @@
 
 This distribution starts the basekernel.iso in the Web browser with an virtual HDD (buffer).
 
+The `basekernel.iso` file must be saved in this folder (or a symbolic link towards the file).
+
 # browser vm86.html
 
 > automount